colliery training report(sarpi project, ecl)
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ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
1 Signature………………………..
INDEX
1. ACKNOWLEDGEMENT
2. INTRODUCTION
2.1. Overview of Shyamsundarpur Colliery, Sarpi Project
2.2. Location of the mine
2.3. Company Objective
2.4. Mission
2.5. Vision
2.6. Organizational Structure of Subsidiary Company upto Mine Level
2.7. Management Hierarchy of Shyam Sundarpur Colliery.
2.8. Management Structure of the Sarpi Project, Shyamsundarpur Colliery
3. HISTORY OF SHYAMSUNDARPUR COLLIERY
4. INDIAN COAL INDUSTRY
4.1. An Overview
4.2. A Preview of Coal India Limited
4.3. Companies under Coal India Limited
4.4. Coal Reserves in India
5. GEOLOGY OF SHYAMSUNDARPUR COLLIERY
5.1. General
5.2. Grade wise Classification of Manganese Ore
6. PRESENT STATUS OF WORKING
7. SURVEY
7.1. Bore Hole Data
7.2. Plan Proposed Layouts and BH Information’s
7.3. Plan Showing Village and Workings of Overlying & Underlying Seam
7.4. Seam details
8. METHOD OF WORKING
8.1. Development By Continuous Miner
8.1.1. CM Section Details
8.1.1.1. Continuous Miner
8.1.1.1.1. Specification of JOYCM 15 Coal Cutting Machine
8.1.1.2. Shuttle Car
8.1.1.2.1. Introduction
8.1.1.2.2. Design
8.1.1.2.3. Main Components of Shuttle Car
8.1.1.3. Feeder Breaker
8.1.1.3.1. Introduction
8.1.1.3.2. Design
8.1.1.3.3. Specification
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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8.1.1.4. Ouad Bolter
8.1.1.4.1. Introduction
8.1.1.4.2. General Specification
8.1.1.5. Load Centre
8.2. Development by LHD
8.2.1. Load Haul Dump(LHD)
8.3. Depillaring by Stowing
8.3.1. Side Discharge Loader(SDL)
8.3.2. Universal Drilling Machine(UDM)
9. PRODUCTION
9.1. During Training Time (July 2013 to October 2013)
9.2. Year Wise Production
9.3. Types of Support
9.4. Anchorage testing
10. WINDING ENGINE
11. SUPPORT
11.1. Permanent Support
11.1.1. Coal Pillar
11.1.2. Rock Bolt
11.2. Temporary Support
12. LIST OF SAFETY EQIPMENT IN SSPUR COLLIERY
13. DUAL HEIGHT, WATER DIVERTING ROCK BOLTING TELLTALE
13.1. Introduction
13.2. Reading Methods of Telltale
13.3. Interpretation
13.4. Action
14. VENTILATION
14.1. Ventilation and Environment Monitoring System
15. FIRE AND EXPLOSION
16. INUNDATION
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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ACKNOWLEDGEMENT
First of all, I would like to thank my family for providing everything such as money, to buy anything
that are related to this training and their advise, which was the most needed for this training. They also
supported me and encouraged me to complete the training so that I will not procrastinate in doing it.
Then I would like to thank to our respected Principal Sri. Saibal Aich of Asansol Polytechnic, Prof.
Aditya Majee (Training and Placement Officer, Asansol Polytechnic) for giving me and my friends
opportunity to complete vocational training at a mechanized underground coal mine like SHYAM
SUNDARPUR COLLIERY, SARPI PROJECT.
And I would like to thank my teachers, Prof. Abhijit Dutta (H.O.D, Mining Department, Asansol
Polytechnic), Prof N.J.Bhattacharjee (Lecturer, Mining Department, Asansol Polytechnic), Prof. Falguni
Banerjee (Lecturer, Mining Department, Asansol Polytechnic) for their consistent encouragement and
guidance.
I also convey my sincere respect and gratitude to Sri. Debabrata Halder (Colliery Manager, S.S.Pur
Colliery); Sri B.C.Pal (Sr.Manager, Strata, S.S.Pur Colliery); Sri U.K.Karmakar (V.T.Manager, S.S.Pur
Colliery); Sri. Rayees Alam (M.T., Mining, S.S.Pur Colliery); Sri Ranadeep Bhattacharjee (Asstt.
Manager, S.S.Pur Colliery); Sri. Debasis Sinha (Overman, S.S.Pur Colliery) for their consistent
encouragement and able guidance.
I am also thankful to my friends who were doing this training with me and sharing their ideas. They
were helpful that when we combined and discussed together, we had this task done.
Lastly, I offer my regards and blessings to all of those who directly or indirectly supported me in any respect during the completion of the training.
(ABHISEK MAITY) 4th Semester student of Mining Engineering
ROLL NO: D120061004-10844
ASANSOL POLYTECHNIC
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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2. INTRODUCTION
2.1. BRIEF HISTORY OF SHYAMSUNDERPUR COLLIERY
Name of the mine : Sarpi Project, SSPur Colliery
Address Of the Mine : P.O. Ukhra,P.S. Andal, Dist: Burdwan, Pin: 713363
Date of opening of the Mine : 5.12.1946 – ESP unit, M/S Sarpi Kajora Coal Co.
Name of the Owner : DIR(P&P), Eastern Coalfields Limited
History of change of ownership : None
Disputes of boundary, if any : No
2.2. LOCATION OF THE MINE
Shyamsundarpur colliery is constituent of Bankola Area, ECL. It consists of two units, ESP Unit & Sarpi Unit. East Sitalpur (ESP) Unit is situated Chak Banbohal,
Shyamsundarpur and Chka Jhanjra Mouza of P.S. Laudoha, and about 4 KM away from Ukhra Station. The colliery is linked with Andal-Ukhra-Jhanjra roadway and also connects to the G.T. road (NH-2) by an all weather pacca road and is about 10 KM
away from the colliery.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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2.3. COMPANY OBJECTIVE
To optimize generations of internal resources by improving productivity of resources,
prevent wastage and to mobilize adequate external resources to meet investment need.
To maintain high standards of safety and strive for accident free mining of coal.
To lay due emphasis on aforestation, protection of environment and control of pollution.
To undertake detailed exploration and plan for new projects to meet the future coal
demand.
To modernize existing mines.
To develop technical know-how and organizational capability of coal mining as well as
beneficiation and undertake, wherever necessary, apply research and development work
related to scientific exploration as well as better utilization of coal.
To improve quality of life of employees and to discharge the corporate obligations to
society at large and the community around the coalfields in particular.
To provide adequate number of skilled manpower to run operations and impart
technical and managerial training for up gradation of skill.
To improve consumer satisfaction.
2.4. MISSION
The mission of Coal India Limited is to produce the planned quantity of coal efficiently
and economically with due respect to safety, conservation & quality.
2.5. VISION
To emerge from the position of domestic leader to leader to leading player in the energy
sector by adopting best practices from mine to market with due care to environmental
and social sustenance.
Our Safety Objective: is to achieve “Zero Harm Potential” in all mines and other establishments.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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2.6. ORGANIZATIONAL STRUCTURE OF SUBSIDIARY COMPANY UP TO MINE LEVEL
2.7. MANAGEMENT HIERARCHY OF SHYAMSUNDARPUR
COLLIERY
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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2.8. MANAGEMENT STRUCTURE OF SHYAMSUNDER PUR COLLIERY
SL DESIGNATION NAME
1 Agent Sri Ajay Kumar Sharma
2 Manager Sri Debabrata Halder
3 Project Manager Sri Krupanidhi Majhi
4 Colliery Engineer Sri Mani Shankar Pandey
5 Safety Manager Sri Kabindra Prasad
6 Ventilation Officer Sri Tapan Kumar Banerjee
7 Project Engineer Sri Swapan Dasgupta
8 Production Manager Sri Bipin Chandra Pal
9 Strata Monitoring
Officer Sri Arindam Basu
10 Asstt. Manager
Sri Susanta. Biswas
Sri Janmejai Mahato
Sri Arbind Kumar Gupta
Sri Sunil Kumar
Sri Sanjoy Ghosh
Sri T.K. Ghoshal
Sri Pravin Agarwal
Sri Umesh Bhargava
Sri Dungar Singh Khiriya
Sri Raju Basak
Sri Debaditya Acharya
Sri Rayees Alum
Sri Tarun Ghoshal
Sri Sonnet Mondal
11 Engineer
Sri Mukti Pada Mukherjee
Sri Tarun Kanti Kar
Sri Ashok Kumar De
Sri Anup Kr Das
12 Survey Officer Sri Paresh Chandra Ghosh
13 Medical Officer Sri Asis Kumar Laha
14 Personnel Manager Sri Siraj Anwar
Ms Chandra Mallick
15 Finance Manager Sri Asit Baran Moadal
16 Civil Engineer Sri Azizur Rahaman
17 V.T. Manager Sri Uttam Kumar Karmakar
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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3. HISTORY OF SHYAMSUNDARPUR COLLIERY
Shyamsundarpur Colliery is constituent of Bankola Area, ECL. It consists of two units,
ESP Unit & Sarpi Unit. East Sitalpur (ESP) Unit is situated Chak Banbohal,
Shyamsundarpur and Chka Jhanjra Mouza of P.S. Laudoha and about 4 KM away from
Ukhra Station. The colliery is linked with Andal-Ukhra-Jhanjra roadway and also
connects to the G.T. road by an all weather pacca road and is about 10 KM away from the
colliery. The Durgapur Industrial Complex (SAIL) is about 20 KM by road to the South
East of the Area.
ESP unit of the colliery is working from 05.12.1946 established by M/S Sarpi Kajora
Coal Co. Limited. The mine was nationalized by coal authority on 31.01.1973.
SDL machine has been introduced on 23.02.2001 at RVII seam of ESP unit and RVIIB1
seam on 28.02.2001. LHD machine has been introduced at RVII seam on 15.07.2008.
Continuous Miner has been introduced on dated 28.08.2010. Presently the mine is loader
less. Modern Mechanized drilling machine UDM (Universal Drill machine) has been
introduced on and from at both RVII & RVIIIB1 seam.
The colliery has a mine lease hold area of 533 Hectors.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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4. INDIAN COAL INDUSTRY
4.1. AN OVERVIEW
The Indian coal industry is the world’s third largest in terms of production and fourth
largest in terms of reserves. Around 70% of the total production is used for electricity
generation and the remaining by the steel, cement and other heavy industries.
The first coal mining operation commenced in 1774 in the Raniganj coalfield on the
banks of River Damodar.
Till independence, the Indian coal industry witnessed sporadic phases of growth. Since
the private sector followed unscientific methods, productivity was low. The Indian
government took steps to correct this and improve the working conditions in the nation’s
coal industry. All privately owned coal producing companies were nationalized under the
Coal Mines (Nationalization) Act.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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4.2. COAL INDIA LIMITED
Coal India Limited (CIL) as an organized state owned coal mining corporate came into
being in November 1975.
CIL today is the single largest coal producer in the world with 433 MT per annum.
Operating through 81 mining areas CIL is an apex body with 7 wholly owned coal
producing subsidiaries and 1 mine planning and Consultancy Company spread over 8
states of India.
CIL also manages 200 other establishments like workshops, hospitals etc. It also owns 26
technical & management training institutes and 102 Vocational Training Institutes
Centers.
It was granted the Maharatna recognition in April 2011.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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4.3. COMPANIES OF COAL INDIA LIMITED
4.4. COAL RESERVES IN INDIA
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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5. GEOLOGY OF SHYAMSUNDER PUR COLLIERY :
5.1. GENERAL
This colliery has a mine lease hold area of 533 hectors. The general texture of the surface
ground is sand stone mixes with laterite boulder, moram at place and earth. The gradient
toward North East and South side of Ukhra Madhaiganj road is towards South East. There
are several workable seams namely RIX, RVIII T2, RVIII B1, RVII, RVIIA, RVI, RV &
RIV are lying within a depth varies from 35 mtrs. to 316.5 mtrs. and thickness varies
from 2.2 mtrs. to 8.35 mtrs.
The mining Block of the Colliery consists of three units, Sarpi Unit, East Sitalpur Unit
and South Bankola Unit within the mine block. Coal is being mined RVII and RVIIIB1
via series of belt conveyor.
6. PRESENT STATUS OF WORKING:
.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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7. SURVEY
7.1. BORE HOLE DATA
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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7.2. PLAN PROPOSED LAYOUTS AND BH INFORMATION
7.3. PLAN SHOWING VILLAGE AND WORKINGS OF OVERLYING & UNDERLYING SEAM
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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7.4. SEAM DETAILS
8. METHOD OF WORKING:
The present method of work consists of depillaring with stowing in Jambad Bottom (RVIII B1)
seam by manually. At Bankola (RVII) seam developed by Board & Pillar method with
combination of LHD & Belt Conveyor and Continuous Miner, Shuttle Car, Quad Bolter, Feeder
Breaker and Belt Conveyors combination on Room & Pillar method. Economics of this mine has
been improved excellently. Recently the manual section is converted into mechanized SDL and
coal tub combination.
SEAM PARTING
(in mts.) GRADE
THICKNESS
(in mts.)
DEPTH (In
Mtrs)
GEOLOGICAL RSERVED
(Million Te)
MINEABLE RSERVED
(Million Te) PRESENT
STATUS GRADIENT
VIRGIN SOP TOTAL VIRGIN SOP TOTAL
RIX ----- "G4" 2.1 35.3 ---- ---- ---- ---- ---- ---- Exhausted 1 IN 25
RVIII T2 28.87 "G4" 3.03 64.17 ---- 1.36 1.36 ---- 0.95 0.95 Standing
on pillar 1 IN 22.5
RVIII B1 3.00-18.00
"G4" 4.65 70.20 ---- 3.39 3.39 ---- 2.37 2.37 Is being w ork
1 IN 22.5
RVII 50.69 "G4" 4.69 125.50 19.65 6.75 26.40 11.25 6.75 18.00 Is being
w ork
1 IN 15
22.40
85%
RVIIA 28.34 "G4" 2.76 156.68 15.29 3.62 18.91 10.38 3.62 14.00 Partly
developed
16.28 and w ater
logged 1 IN 20
85%
RVI 60.57 Not
know n 6.23 220.01 30.58 ---- 30.58 21.40 ---- 21.40 Virgin
RV 20.00 Do 4.20 246.85 20.61 ---- 20.61 14.42 ---- 14.42 Virgin
RIV 65.40 Do 8.35 316.45 41.00 ---- 41.00 28.70 ---- 28.70 Virgin
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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8.1. DEVELOPMENT BY CM
District Name : 41st west level in bankola seam
Mode of Entry : Shaft
Method of Mining : Bord & Pillar
Method of Working : Development by continuous miner.
Average TDP : 1600Te
Method of Support : Roof Bolting
No of Haulage : 02
Face Machinery : CM, Shuttle Car, Quad Bolter, Feeder Breaker, Belt Conveyor.
Name of seam : RVII
Thickness : 4.69mts
Gradient : 1 in 15
Gassiness : Degree II
Grade : G4
Roof : Shale and intercalation of mud & sand stone
Floor : Shale and sand stone
Geological Reserve : Mineable about 26.4MTe
Mineable Reserve : about 17.47MTe
Depth of Shaft : 129.91mts
Diameter of shaft : 5.1mts
Incubation period : 6 month
RMR : 49.5
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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The standard layout consists of a five road development, with the main conveyor and feeder breaker
positioned in the central roadway. This provides working areas to carry out all the main development
functions:
One heading for the CM to be cutting
One heading ready for cutting
One heading for ventilation rearrangement and survey work
One heading for cleaning by LHD
One heading for supporting by Quad Bolter
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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8.1.1. CM SECTION DETAILS:
8.1.1.1. CONTINUOUS MINER:
Continuous Miner is the machinery which cut Coal, gather and load on
transporting machinery eliminating drilling blasting operation.
Actually Continuous Miner is a package of machinery including- a) Coal Cutting Machine :- Continuous Miner b) Coal Hauling Machine :- Shuttle Car
c) Coal Lump Breaking & Feeding d) Machine to Conveyors :- Feeder Breaker
e) Face Supporting Machine :- Bolter Quad Bolter Twin Bolter
f) Face & Road Cleaning Machine :- LHD g) Power Distribution :- Load Centre
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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8.1.1.1.1. SPECIFICATION OF JOYCM 15 COAL CUTTING MACHINE
Joy 12CM15 is a high capacity, totally remote controlled CM designed for medium to high coal seam applications.
No. of CM used in ShyamSundar pur : 01 Maker : JOY Mining and Machinery Ltd. Model : 10 DVG Serial Number : CM 6149 loading rate : 17-30 tone/min
The machine has :
Peaks - 66
Cutter head drum Diameter - 1.12m
Cutting Width - 3.3m
Max cutting height - 4.6m
Conveyor width - 0.76m with 2.41m/s speed
CM is equipped with 2 cutter heads, with standard clutch protected, AC induction Motors (170kw) mounted parallel to centreline of boom frame.
Each cutter motor connects to the gearing of gear case using an internal torque shafts.
2 gathering head motors (AC) of 40kw
2 traction motors (DC) of 26kw
1 pump motor of 52kw;
1 dust collector fan motor 19kw.
Total Weight of CM = 58 tonns(58376kg)
This technology was first introduced in USA in the decade nineteen forties. Gradually in SA, Australia, Chaina etc Continuous Miner technology has been adopted.
In the year 2002 the Continuous Miner technology was adopted in ‘Anjal Hill’ mines of Chirimiri in India & Tandsi of WCL.
ECL – Jhanjra / Shyamsundarpur Colliery SECL – Chirimiri – NCPHI, Sheetal Dhara
WCL – Tandsi SCCL – VKT, GDKII (DBT)
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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As Continuous Miner is large underground machinery, so lowering the package of CM machinery can only be done through incline of proper cross section & gradient – not
through any shaft / pit.
The coal seam with following characteristics can be worked by Continuous Miner Thickness : - 1.5mts. to 4.5 mts. Gradient : - Flat to 1 in 10 ( 6° )
Floor : - Soft shale to hard competent.
Production capacity of Continuous Miner depends upto mining characteristics, evacuation system etc. It can produced more than 5,00,000 tonnes per annum.
Presently at Shyamsundarpur Colliery,
Gradient : - Flat to 1 in 10 ( 6° ) Floor : - Soft shale to hard competent.
Production capacity of Continuous Miner depends upto mining characteristics, evacuation system etc. It can produced more than 5,00,000 tonnes per annum.
8.1.1.2. SHUTTLE CAR:
There are 2 shuttle car used in Shyamsundar pur Colliery. They are-
Maker : Joy Mining & Machinery Model : 1. 10SC35BC
2. 10SC36BC
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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8.1.1.2.1. INTRODUCTION The Joy Shuttle car is a large heavy duty unit, designed to carry maximum payload at high
speed.
It collects the coal from continuous miner working at the face and supplies to Feeder breaker
or mine cars or belt conveyors.
8.1.1.2.2. DESIGN The car has four wheel positive drives and four wheel hydraulic operated steering, which
provides maximum traction potential with a minimum turning radius.
It contains hydraulic pumps, driven by a separate electrical motor to power the cable reel,
steering and conveyor elevating functions.
At discharge end a chain and flight conveyor is fitted which can be elevated by hydraulic cylinders.
8.1.1.2.3. MAIN COMPONENTS OF SHUTTLE CAR
Wheel - It has 4 wheel
Motor - Wheels has 2(two) 85kw DC traction motor. Tram speed - The maximum vehicle tram speed is
6mph (9.6 km/hr)
Rated Load Capacity - 8 tone Maximum weight - 18,000 kg
Ground pressure at max. rated load - 8.5 kg/cm2
Tires - 35*15-15
Length - 8.3m Width - with 1.42 m conveyor, 3.2m
Chassis height - .9m Load end height - .8m
Ground Clearance - 212mm
Motor - conveyor 50Hz- 1-16 kw
Pump 50Hz- 1-16 kw
Traction 50Hz- 2-50
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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8.1.1.3. FEEDER BREAKER: Maker : JOY Mining & Machinery Ltd.
Model No : D1MB3-7C Serial No : 14185
Quantity : 01
8.1.1.3.1. INTRODUCTION The belt feeder breaker is a single piece machine which is installed before the belt conveyor
to receive the material and size it before being carried to another location for operation.
The Stamler Belt Feeder is a mobile conveyor system, which incorporates a pick up breaker
to reduce the size of the material being conveyed through the machine.
8.1.1.3.2. DESIGN The design of the feeder breaker is such that the material is placed onto the conveyor at the
intake end of the machine, which has been built with a hopper that is adequately sized to
receive the incoming material.
The pick breaker breaks the material by striking the material with sharp pointed picks. Once
the material is reduced to the required size, the material is moved through the machine and is discharged on to a belt conveyor at the discharge end.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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8.1.1.3.3. SPECIFICATION
Overall width (at intake end) -108-142 inch Conveyor width - 44, 50 & 56 inch
Overall length - 396-460 inch Weight - 34000-40823 kg
Seam height - 32-72 inch Processed Material -Run of mine coal with high percentage of rockcontent Breaker Diameter - 15-21 inch
Breaker Pick Force - Upto 110, 000lbs Ground Clearance(Intake End) - 0-8inch
(Discharge End)- 6-21 inch Frame Height - 28-37 inch Total Horse Power - Upto 250 hp
Intake End Design - Ram car 3-way dump
Hopper w/side boards
8.1.1.4. QUAD BOLTER:
There maker of Quad Bolter used in Shyamsundar pur Colliery is JOY Mining & Machinery Ltd.
Number of Quantity is 1(One). Model 4XHFX280 Rotary Wet with 4 controls.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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8.1.1.4.1. INTRODUCTION
The Quad Bolter is a machine which capable of installing bolts into the roof and in walls.
Drilling is accomplished by JOY Patented Hydraulic roof bolter.
Direct mast mounted hydraulic controls.
Distance between two bolt in roof is in junction is 0.8m-1.2m, in walls-1.5m.
8.1.1.4.2. GENERAL SPECIFICATION
Number of roof bolts : 4
Number of rib drills : Roof drills rollover to bolt rib
Machine Weight : Approx 29,800 kg
Machine length : 8008mm
Machine width : 3160mm retracted, 5680mm with platforms extended
Operating width : Upto 6000mm
Operating range : 2400mm to 5000mm
Roof Bolt : Hole Diameter- 32mm
Bolt length- 1.95m Bolt Diameter- 30.4mm Bolt thread length- 0.15m
Minimum tramming height : 2060mm
Ground clearance : 360mm
Traction speed : 0-20 m/min hydraulic drive, proportional control.
Hydraulic Tank : 450 litres main tank + 350 liters in chasis.
Motor : Hydraulic pump motor 1*125kw air-cooled 50Hz.
Pump : Fixed gear pump, 4 sections, each section 97 liters/min
Voltage : 1140 v, 1050v or 950v
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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8.1.1.5. LOAD CENTRE
It is also known as distribution board or panel board.
It is a component which divides an electrical supply or an electrical power feed into subsidiary circuits, while providing a protective fuse or circuit breaker for each circuit, in a common enclosure.
Normally it has a main switch, a recent board, one or more residual current devices or
residual circuit breaker with over current.
Manufacturer : B & F Mine Matic
Total Mine Distribution (TDM)
Power Supply : 2000A DC
Input : 3.3kv
Output : 1.1kv in each branch
Electricity providing to Feeder Breaker, Quad Bolter, Continuous Miner, Shuttle Cars.
It has a door-mounted keypad and graphics display provided for user interface. Control
functions and all process variables are under-configurable.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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8.2. DEVELOPMENT BY LHD District Name : 25th west level in bankola seam
Mode of Entry : Shaft
Method of Mining : Bord & Pillar.
Type of Explosive used : P5 (SUPER COAL)
Detonator : Delay Detonator
Method of Working : Development by LHD (LOAD HAUL DUMP).
Average TDP : 450Te
Method of Support : Roof Bolting
No of Haulage : 01
Face Machinery : Drill, LHD, UDM, Belt Conveyor.
Type of cut : Wedge, Pyramid.
Name of seam : RVII
Thickness : 4.69mts
Gradient : 1 in 15
Gassiness : Degree II
Grade : G4
Roof : Shale and intercalation
of mud & sand stone
Floor : Shale and sand stone
Geological Reserve : Mineable about 26.4MTe
Mineable Reserve : about 17.47MTe
Depth of Shaft : 129.91mts
Diameter of shaft : 5.1mts
Incubation period : 6 month
RMR : 49.5
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
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8.2.1. LOAD HAUL DUMP(LHD)
LHD is a tyre mounted loading machine which takes blasted coal from the face in its bucket,
transports it over a distance and dumps it on the district chain or belt conveyor.
Being tyre mounted, it runs faster than SDL (at speed upto 4km/hr) and the chain/belt
conveyor could be kept as far away as 90m from the face.
Power to the machine is fed by a trailing cable mounted on cable reel of the machine.
Being tyre mounted, LHD cannot work where gradient is more than 1 in 6 or floor is weak
and water seeps from the floor or drips from the roof.
The bucket, which is fitted in front of the machine. Is front discharge type. In tilting type
bucket, rear portion of the bucket is raised to tilt the bucket and unload coal. In pusher plate
type. The bucket has a pusher plate for pushing and unloading coal in the front. All
movements of bucket are by hydraulic pushers.
LHD is made in two parts which are joined by a flexible joint and can rotate upto 1000,
enabling it to take a turn at a narrow gallery junction also.
Depending on the model, bucket has capacity 1.5m3.
The machine can work in seam heights upto 2.4m. A 1.5m3 LHD is powered by 50h.p/550v
FLP motor.
For smooth working, galleries have to be maintained clear of fallen coal.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
28 Signature………………………..
8.3. DEPILLARING BY STOWING
District Name : PANEL S5 OF JAMBAD BOTTOM (R-VIII B1)
Mode of Entry : Shaft
Method of Mining : Bord & Pillar.
Type of Explosive used : P3 (SUPER COAL)
Detonator : Delay Detonator
Method of Working : Depillaring by Stowing
Average TDP : 200Te
Method of Support : Roof Bolting
No of Haulage : 01
Face Machinery : Drill, SDL, UDM.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
29 Signature………………………..
Type of cut : Wedge, Pyramid.
Name of seam : RVIII B1
Thickness : 4.65mts
Gradient : 1 in 22.5
Gassiness : Degree II
Grade : G4
Roof : Shale and intercalation
of mud & sand stone
Floor : Shale and sand stone
Geological Reserve : Mineable about 3.39MTe
Mineable Reserve : about 2.37MTe
Depth of Shaft : 63.86mts
Diameter of shaft : 4.2mts
Incubation period : 9 month
Stowing material : Sand and water (Ratio 3:1)
RMR : 38
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
30 Signature………………………..
8.3.1. SDL (SIDE DISCHARGE LOADER)
No. of SDL used in Shyamsundarpur Colliery is 2(Two).
Maker of SDL is EIMCO ELECON LTD.
It is a popular coal loading machine of u.g. mines which can unload coal to the right or left of
the machine.
SDL takes blasted coal from the face with the bucket at front of the machine, transports and
dumps coal onto chain conveyor, belt conveyors (called pony conveyors) installed near the
faces are used in preference to chain/belt conveyors, tubs and mine cars for higher production
and productivity.
Being crawler mounted, SDL can work in gradients upto 1 in 4.
SDL is provided with dual chain conveyor type side discharge bucket for easier unloading,
lesser spillage and convenience of working in thinner seams. Height of the machine over
canopy is 2.1m.
The machine is powered by FLP electric motor and all movements of bucket are done
hydraulically for which hydraulic pack is mounted on machine itself.
Bucket capacity of SDL is 1m3.
Motor capacity is 65hp/550v
One SDL on average, loads about 100TDP, but, is capable of much more with availability of
adequate blasted coal and evacuation capacity, and efficient maintenance.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
31 Signature………………………..
8.3.2. UDM (UNIVERSAL DRILLING MACHINE)
It is a crawler mounted electro-hydraulic machine which can drill blast-holes in the face, and
also holes for roof/side/floor bolting at various angles. Hence, it has been named UDM.
The machine is provided with a 22kw FLP motor, a strong canopy and is so designed that it
can move in narrow galleries and can take sharp turns.
Movement of drill boom and face by hydraulic pushers. The operator is required only to
control a few levers to do fast drilling. He is saved from falling dust. The machine can drill
holes from 38 to 63mm diameter and 3 to 5m deep. By adding more drill rods, holes upto
20m long can be drilled. Hence, it is found very useful in Blasting Gallery Panels also.
Since hand held drill cannot drill long holes, blasting progress per round is limited to 0.9m.
UDM permits drilling of longer holes easily and hence, better progress per blast is possible.
Due to speedy drilling, production and productivity of loading machines (SDL, LHD) also
increase considerably.
UDM can work in gradients upto 1 in 4 and in seam heights upto 3.5m. The machine is 1.6m
high, 4.6m long and 1m wide with a travelling speed upto 3kmph.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
32 Signature………………………..
PRODUCTION
(During Training Time Jul-13 to Oct-13)
YEAR WISE PRODUCTION
50000
51000
52000
53000
54000
55000
56000
Jul-13 Aug-13 Sep-13 Oct-13
Ton
e
Jul-13 Aug-13 Sep-13 Oct-13
Production(Tone) 51966 54029 55315 55015
Production(Ton)
264193282248
642026
703064
640107
0
100000
200000
300000
400000
500000
600000
700000
800000
2009 2010 2011 2012 2013(upto Oct-13)
Production(Tone)
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
33 Signature………………………..
WINDINING ENGINE
Makers Name : JESSOP
Pulley Diameter : 9’4”
Guide Rope Diameter : 11/4
Type : Steam
Winding Rope Diameter : 25mm
Life of Rope : 1 year 6 months
Capacity of Suspension Gear : 5Tons
Drum Diameter : 108”
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
34 Signature………………………..
SUPPORT
Supports in mine are two types:-
1. Permanent Supports
2. Temporary Supports
1. Permanent Supports:-
Permanent Supports are those supports which are used in mine for permanent purpose.
Example: - Coal Pillar, Rock Bolt.
A. Coal Pillar :-
Coal Pillars are made of Coal and size is 30m*30m
B. Rock Bolt :-
After each round of blasting the sides and roof shall be thoroughly dressed.
As soon as the faces advances, the roof shall be permanently supported by
torque, steel, suitable rock, bolts having 20mm diameter and 1.5m long and at
one end 90mm length threaded, suitable to fit 18mm size nut for tightening of
bearing plate.
The rock bolt shall be grouted for its full length at an interval of 1.2m. In
strike as well as dip-rise direction in grid pattern.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
35 Signature………………………..
A bearing plate not less than 10cm by 10cm and 5mm thick shall be used for
fastening of rock bolts.
The rock bolts shall be installed in a 32mm diameter holes. Good quality
cement capsules having diameter 25mm shall be used for grouting the bolts.
At least 2 tonnes and 6 tonnes of load in 8 hour shall be obtained / recorded
after installation of each bolts
The maximum distance between the last row of rock bolts and moving face
shall not be more than 1.5m at any point of time.
As far as possible, the rock bolts shall be installed normal to bedded plane.
No person other than those required for dressing or support shall work at any
place which is not supported in accordance with systematic support rule.
2. Temporary Support:-
Temporary Supports are those supports which are used in mine for temporary purpose.
Example: Cogs, Props.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
36 Signature………………………..
LIST OF SAFETY EQUIPMENT IN SSPUR COLIERY
1. Flame Safety Lamp :- 06 2. M.S.A. Methanometer :- 06
3. Toxi-Meter :- 01 4. Oxy-Meter :- Nil 5. Explosive Meter :- Nil
6. CO-Detector :- 01
7. Anemo-Meter :- 02
8. Hygro-Meter :- 02
DUAL HEIGHT, WATER DIVERTING ROCK BOLTING TELLTALE
INTRODUCTION Ground control monitoring instrumentation fulfils two key requirements for safe underground
mining. It provides personnel with information on the stability of the roof and sides. It can provide the detailed data on rock and support loads and deformations required
to optimize support design.
This visual telltale gives immediate information on movement within and above the rockbolted height.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
37 Signature………………………..
READING METHODS OF TELLTALE
BY COLOR
Report whole and part bands visible. For example:
“A”: GREEEN “B”: YELLOW Report daily, unless instructed otherwise.
INTERPRETATION
1. Movement of “A” relative to its reference (bottom plastic tube) represents the strata expansion WITHIN the bolted height.
2. Movement of “B” relative to its reference (bottom of “A” ) represents the strata expansion ABOVE the bolted height (assuming no movement above top anchor)
3. The total strata expansion is “A” plus “B”.
4. Expansion of strata above the top anchor detected.
ACTION
The appropriate action levels for the district and the remedial actions to be taken, when these levels are exceeded, will have been set by the Colliery Manager. However if the telltale indicates
either “A” or “B” has changed from one color-band to another or if the rate of movement increases, management should be consulted immediately for the required action.
VENTILATION
All the seams have inter-connected ventilation and it’s reported that ventilation is inadequate
in both section of RVII. Since Pit No I of Sarpi Unit has been widening and deepening has been done up to RVIIA dip side development of RVII should be speeded up and connected with the
shaft at least RVII ventilation can be independent.
VENTILATION AND ENVIRONMENT MONITORING SYSTEM
Unit Fan Location HP of Motor
Capacity m³/min
Type of Fan
Water Gauge
ESP Unit
Axial Flow Voltas make
No.3 Pit 200 KW 8000 PV 300 50 mm
Stand by Axial
Flow No.3 Pit 110 KW 5000 PV 200 22 mm
Sarpi Unit
Axial Flow No.2 Pit 110 KW 5000 PV 200 22 mm
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
38 Signature………………………..
FIRE AND EXPLOSION
a) There is no history of explosion in this mine. The mine is degree II gassiness.
b) Crossing point and ignition point temperature of Jambad top seam are 111O0 C and 175O0 C respectively.
c) The following is a history of fire at the mine.
Unit Name of Panels Cause Date Method of
dealing
Sorpi Upper Kajora Seam Spontaneous heating 1992 Sealed off
Panel no. 25 as Jambad bottom
Spontaneous heating 15.08.03 Sealed off
ESP Panel No. 25 as Jambad
seam
Spontaneous heating Feb 2004 Sealed off
Panel No. 47C as Jambad seam
Spontaneous heating 01.01.2000 Sealed off
Panel No. 51 as Jambad
seam
Spontaneous heating 11.07.2003 Sealed off
INUNDATION
There are extensive subsided areas in Sarpi Kajora Unit. Accumulation of water over the
subsided areas should be prevented by filling up the depressions and by providing garland drains.
Development of working in Bankola Seam (RVII) is being done over the water logged
workings of Bonbahal seam. The parting between the seams was 24 mts.
Drain out water through weep holes shall be drained from boundary winzes or sill pillar drive
and collected in the large capacity sump through drain. This discharged water shall be
pumped by 50HP capacity centrifugal pump/ 30 HP submersible pump to surface water tank
located at CH.9500.
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
39 Signature………………………..
INNOVATION
Usage of Steel Frames in Stone Dust Barrier
The usage of steel frames replacing the wooden frames in the construction of stone dust
barrier is an innovative step undertaken in this mine.
Introduction of Miner’s Station
An innovative step has been taken in terms of comfort of miners by establishing a miner’s
station equipped with adequate facilities.
PEOPLE AT MINER’S STATION
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
40 Signature………………………..
STORAGE OF TOOLS AT THE BACK OF MINER’S STATION
ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC
41 Signature………………………..
Thank
you
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